23 May 2009
Opening of an illustrative exhibition of the progress made in gravitational lensing from
1919 to the present day. This will be installed in conjunction with other historical exhibitions
in the capital of São Tomé.

27 May 2009
Talks at the Instituto Superior Politécnico on São Tomé, with lunch at the Portuguese embassy.

29 May 2009
Unveiling of a commemorative plaque in a ceremony at the Roça Sundy
plantation, 90 years after Eddington took his measurements at the site.
President Cassandra gave this speech (in Portuguese).